Occasional reports include temporary fatigue or lethargy (5-10% of users), mild headaches in the first few days of use, slight water retention, or transient flushing at injection sites
May require administration by a healthcare professional
Researchers have examined its interaction with pathways associated with nitric oxide signaling, endothelial function, and extracellular matrix repair
Unfortunately, this is also the least accurate way to measure vitamin B12 status in your body
The advantage is obvious, safe, controlled, and consistent results every time
Because eczema-prone skin is more reactive by definition, patch testing matters more here than it does for average skin